AirHint found the following cheapest return flights from Christchurch (CHC) to Seoul (ICN) in December 2025 (see full year).

Return flights

19 Dec - 30 Dec	Qantas
23 Dec - 06 Jan	China Southern
15 Dec - 22 Dec	Air New Zealand
16 Dec - 31 Jan	Air New Zealand
15 Dec - 31 Jan	Qantas
22 Dec - 07 Jan	China Southern
18 Dec - 16 Jan	Air New Zealand
12 Dec - 31 Jan	Jetstar
12 Dec - 10 Jan	China Southern
18 Dec - 18 Jan	China Southern
12 Dec - 26 Dec	China Southern
12 Dec - 19 Dec	China Southern

Also check the deals for one-way flights from Christchurch to Seoul in December.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Christchurch to Seoul in December from $1387

Return flights